Riser structure for stapling machines



p l 54 w. G. PANKONIN 2,673,978

RISER STRUCTURE FOR STAPLING MACHINES Original Filed June 5, 1950 32 Fl 6. 4 I I 95;: a 95 95 42 --9/ 9/ 1% 74 INVENTOR.

WILLIAM G-PANKONIN ATTORNEY Patented Apr. 6, 1954 RISER STRUCTURE FOR STAPLING MACHINES William G. Pankonin, Chicago, Ill.

Original application Jun 166,190. Divided and 12, 1952, Serial No. 303,

8 Claims. (Cl. 13)

This invention relates to improvements in stapling machines, particularly the so-called plier-type. It is a division of the application of applicant herein, Serial No. 166,190, filed June 5, 1950, for Stapling Machines and reference is made to such application for a full description of the stapling machine.

stapling machines of the plier type are convenient to use and are readily kept in desk drawers and the like when not in use. However, they have been limited to use only by being held in the hand of the operator.

It is an object of this invention, therefore, to provide a stapling machine of the plier type which may also be used as a desk stapler and a tacker.

Another object of the invention is to provide a stapling machine of the plier type which is small, light in weight, neat in appearance, and yet relatively inexpensive to manufacture.

These objects are obtained by providing a stapling machine which has a main housing within which is pivotally mounted a unit consisting of a staple magazine, an injection chute, and a staple driver. A lower handle with an anvil in alinement with such chute is pivoted to the rear of such housing. An upper handle, which is operatively associated with such driver, is pivoted to the front of such housing. The machine may be held by these handles in one hand and operated as a plier type machine. A novel riser structure operable between the main housing and the staple magazine saves space and weight.

The novel features, which are considered characteristic of the invention, are set forth with particularity in the appended claims. The invention itself, however, both as to its organization and its method of operation, together with additional objects and advantages thereof, will best be understood from the following description of a specific embodiment when read in connection with the accompanying drawings, in which:

Fig. 1 is a view in side elevation of a stapling machine embodying the present invention with the parts positioned for use as a plier type, parts being broken away for clarity;

Fig. 2 is an enlarged fragmentary sectional view taken on a vertical section line through Fig. 1;

Figs. 3, 4 and 5 are perspective views of the various parts constituting the riser structure; and

Fig. 6 is an enlarged fragmentary sectional view taken on the line 6-6 of Fig. 1.

Referring to the drawings by reference nue 5, 1950, Serial No. ggis application August merals, the principal elements of the stapling machine consist of a main housing as within which is pivotally mounted at the rear thereof a unit i2 made up of a staple magazine, an ejection chute, and a driver, an upper handle I 4 pivotally mounted at the front of said housing, a plunger I6 slidably mounted in the front of said housing, and a lower handle 3 pivoted at the rear of said housing. The staple driver and plunger are maintained in normal raised position by a compression spring. The upper handle is maintained in normal raised position by a compression spring 22. The unit I 2 is maintained in normal raised position within the housing by a compression spring 24.

With the above elements arranged as shown in Fig. 1 the stapling machine is ready for hand operation or plier use. The upper and lower handles fit within the hand of the operator and as they are moved toward each other the ejection chute of unit 12 is forced downwardly from housing In until it engages with lower handle [8, as shown in Fig. 2. Continued squeezing drives and clinches a staple. In such use the main housing It] does not move relative to the lower handle l8.

The main housing II] has side walls 32 joined by a front wall 34. At the rear of the main housing l0 there are openings 36 for holding the rear pivot 38. A pair of slots 42 in the side walls 32 engage lugs 95 on a plate 94 to hold it so that it acts as a base for the spring 24.

The unit [2 consists of a magazine 15, tion chute, a magazine blade, and a blade-supporting arm, and functions as a unit upon the operation of the arm to drive staples from the magazine out through the ejection chute. The magazine consists of a core 74 on which staples ride in straddle fashion enclosed by a casing member 16 to provide an ejection chute at the forward end of the magazine. The details of such magazine are shown and described in Patent No. 2,165,572 issued July 11, 1939, to William G. Pankonin. The staple follower mechanism designated is shown and described in Patent No. 2,311,412 issued February 16, 1943, to William G. Pankonin. It is disengageable from the magazine and when inserted as shown in Fig. 1 continually urges the staples toward the ejection chute. A staple-driving blade 82 is mounted on the forward end of a normally upwardly biased blade-carrying arm 84, the latter being pivoted to upward projections located centrally on the casing. The spring 24 maintains the unit 12 in normal raised position within the main housing 10 as shown in Fig. 1.

an ejecfollower, a staple-driving The spring 24 reacts between U-shaped bridge 90, the legs of which having dovetail keys 9! which fit in keystone notches 92 in the upper edges of the casing 16 so as to exert an upward force thereon, and a plate 94 which, as previously described, has lugs 95 secured in the notches 42 of the housing. The legs of bridge 90 loosely slide in notches 99 between the lugs 95. The compression of the spring 24 therefore acts to raise the unit l2 upwardly with respect to the housing I0.

As the device is used as a plier type the handle H is swung toward the housing ID and rear end of lower handle 18, the unit l2 will swing about rear pivot 33 and the bottom of the ejection chute will move away from the housing It] and rest against the anvil or material thereon. This compresses spring 24 to its normal limit, and slightly compresses spring 22.

Although only one embodiment of the invention is shown and described herein, it will be understood that this application is intended to cover such changes or modifications as come within the spirit of the invention or scope of the following claims:

I claim:

1. In a stapling machine, a main housing having walls, an elongated magazine mounted within and pivoted to said housing, a plate secured to said walls above said magazine, a member having legs connected to said magazine and a connecting portion positioned above said plate and connected to said legs, and a spring reacting between said plate and said connecting portion to urge said magazine upwardly in said housing.

2. A stapling machine as claimed in claim 1 in which said plate has openings and said legs are freely slidable in said openings.

3. A stapling machine as claimed in claim 1 in which said walls have slots above said magazine and said plate has projections inserted in said slots to secure said plate in position.

4. A stapling machin as claimed in claim 1 in which said magazine has keyways and said legs have keys for connecting said member to said magazine to resist upward movement with respect to said magazine.

5. A stapling machine as claimed in claim 1 in which said plate is positioned above said magazine so that said magazine will abut against said plate to limit the upward movement thereof with respect to said housing.

6. In a stapling device a main housing, a movable staple carrying arm mounted in said main housing, spring means for maintaining said arm in raised position in said housing comprising a member secured to said arm having a bridge portion above said arm, a spring mounting on said housings above said arm and below said bridge portion, and a spring reacting between said bridge portion and said mounting.

7. In a stapling device means for retaining a staple carrying magazine in upward relation to a. main housing, comprising spring means positioned above said magazine, the upward part of said spring means applying force in said upward direction to said magazine and the lower part of said spring means anchored to said housing.

8. In a stapling machine a housing, a staple carrying magazine pivotally connected to said housing, said magazine having side means for guiding the staples in said magazine, said means having upright members connected with a bridge portion, a plate mounted on said housing walls and above said magazine and below said bridge portion, and a spring between said bridge portion and said plate to maintain said magazine in raised position.

No references cited. 

